/**
 * Base Styles
 * Reset, typography, and accessibility foundations
 */

/* === RESET === */

*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  min-block-size: 100vh;
  font-family: var(--font-text);
  font-size: var(--text-body);
  line-height: var(--lh-relaxed);
  color: var(--color-ink);
  background: var(--color-ground);
}

/* === TYPOGRAPHY === */

h1, h2, .display {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-tight);
  color: var(--color-primary);
}

h3, h4, h5, h6 {
  font-family: var(--font-text);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-snug);
  color: var(--color-ink);
}

.display {
  font-size: var(--text-display);
}

h1 {
  font-size: var(--text-h1);
}

h2 {
  font-size: var(--text-h2);
}

h3 {
  font-size: var(--text-h3);
}

.lead {
  font-size: var(--text-lead);
  line-height: var(--lh-normal);
  color: var(--color-ink-soft);
  max-inline-size: var(--measure);
}

.small {
  font-size: var(--text-small);
  line-height: var(--lh-normal);
}

.eyebrow {
  font-size: var(--text-eyebrow);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: var(--lh-snug);
  color: var(--color-secondary);
}

.data {
  font-family: var(--font-data);
  font-size: var(--text-data);
  font-variant-numeric: tabular-nums;
  line-height: var(--lh-normal);
}

p {
  max-inline-size: var(--measure);
}

/* === LINKS === */

a {
  color: var(--color-secondary-text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

a:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
  border-radius: var(--radius);
}

/* === FOCUS STYLES === */

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-offset);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 0;
}

/* === REDUCED MOTION === */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* === ACCESSIBILITY === */

.skip-link {
  position: absolute;
  inset-block-start: -100px;
  inset-inline-start: 0;
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  color: var(--color-on-primary);
  z-index: 1000;
  text-decoration: none;
}

.skip-link:focus {
  inset-block-start: 0;
}

.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* === UTILITIES === */

.container {
  max-inline-size: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--page-margin);
}

@media (min-width: 640px) {
  .container {
    padding-inline: var(--page-margin-md);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--page-margin-lg);
  }
}

.section {
  padding-block: var(--section-padding);
}

@media (min-width: 1024px) {
  .section {
    padding-block: var(--section-padding-lg);
  }
}

.section-alt {
  background: var(--color-ground-alt);
}

.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  block-size: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  inline-size: 1px;
}